Ditching-plow.



D. DAHLSTROM'. DITGHING PLOW.

APPLICATION FILED PEB.17, 1909. ggg ggg Patented Apr. 26, 1910.

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DANIEL DAHLSTROM, O13 ALVARADO, MINIYESOTA.

DITCH'ING-PLOW.

Specification of Letters Patent.

Application filed. February 17, 1909.

Patented Apr. 26, 1910.

Serial No. 478,362.

To all whom it may concern:

Be it known that I, DANIEL DAHLSTROM, a citizen of the United States,residing at Alvarado, in the county of Marshall, State of Minnesota,have invented certain new and useful Improvements in Ditching- Flows;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The present invention relates to improvements in ditching plows, and ithas for its chief object the production of an extremely simple,effective and durable plow of the type specified, the invention residingespecially in the specific form of mold board employed and theparticular manner in which the same is braced and connected with theland-side.

Briefly described, the invention comprises a main or draft beam, towhich the land-side is connected, an adjustable colter secured to thebeam in advance of the land side, and a mold board secured to arearwardly extending wing fastened to the landside and set at an anglethereto. This wing forms a brace for the mold-board and thus enables thesame to be constructed of lighter metal than has heretofore beenpossible, the share member of the mold-board being secured to the bodyportion thereof by a series of bowed metal straps, one of the strapshaving its lower end fastened to the landside, which latter is providedwith a metal facing having connected thereto a rearwardly extend-- ingflange formed upon the nose of the moldboard.

The preferred embodiment of the invention is illustrated in theaccompanying drawings in which corresponding parts are designated by thesame reference characters throughout the several views.

Of the said drawings, Figures 1 and 2 are elevations of the improvedplow taken from opposite sides thereof. Fig. 3 is a top plan View. Fig.4 is a bottom plan view. Figs. 5, 6 and 7 are transverse sections takenon the lines 55, 66 and 77 of Fig. 4. Fig. 8, a section on the line 8-8of Fig. 4.

Referring more particularly to the drawings, A designates the beam,'Bthe landside, and C the mold-board. The moldboard which is bolteddirectly to the under face of the beam and projects beyond the rear endthereof, has its outer side face provided with a facing 72 of metalplates riveted thereto and to each other, the edges of the facingcoinciding with those of the land side excepting at the rear end of thelatter where the facing is widened and bent outwardly, as indicated bythe reference letter I), to form a tail-piece or rudder.

To the landside is secured at an acute angle, a rearwardly-extendingwing D, the attachment of the latter to the landside being eifected by apair of V-shaped metal straps d located at the front end of the wing,and by a cross-piece (1 located adjacent to the rear end thereof, theends of the cross-piece being fastened to pairs of bent straps d and 0?.The wing is also connected to the beam A by means of a strap d whoseends are fastened to the upper edges of the wing and beam, said strapbeing set at an angle to the latter, as shown. This wing serves as abrace for the mold-board C, which latter comprises a body portion 0, anda share 0, the first mentioned portion being bolted to the wing adjacentits upper longitudinal edge, while its lower edge is bent or curvedslightly outward throughout its entire length, the degree of curvatureincreasing gradually from its rear to its front end. The share portion 0of the mold-board is constructed separately from the body portion 0, and.is likewise curved outwardly on a gradually increasing scale, thecurvature being greatest at the front end or nose of the share at whichpoint the share is bent to form a rearwardly extending flange or lip 0arranged for attachment to the outer side face of the landside, so as toact as a continuation of the facing 6, (see Fig. 1). At the point wherethis flange is formed, the share is strengthened by a bent metal strap 0which is V-shaped in cross-section and has its wings secured to theinner faces of said lip and share. (See Fig. 4.)

The two members of the mold-board are fastened together by means of aseries of three transversely-arranged straps e, f and g, which strapsare riveted to the inner faces of said portions and are thus disposedbetween the mold-board and the wing D. The lower portionsof the strapsare bent so as to conform to the cross-sectional curvature of themold-board. The length of the foremost strap 6 is sufliciently great topermit the extreme lower portion thereof to be bent backward against theinner face of the wing, and the terminal of such portion securedthereto, as shown in Fig. 5. This bent portion manifestly tends to bracethe share at the point of its attachment thereto.

The pointed extremity of the nose portion of the share is arranged tofit in a notch 72, formed in the back or rear edge of an adjustableknife colter H whose shank extends across the beam A and is fastenedthereto by means of a clip 72 which straddles the beam, the free ends ofthe legs of the clip extending through perforations formed in a strap 7Lagainst which latter a pair of nuts It threaded on the clip legs arearranged to be tightened, thus retaining the colter in place.

it its forward end, the beam is provided with a clevis K comprising apair of side plates 70, whose front portions are enlarged and formedwith series of alining perforations in which the ends of a bolt is arearranged for interchangeable engagement. This bolt carries a perforatedhorizontal plate 70 arranged at right angles to the plates 70 and formedwith rearwardly extending lateral arms provided with openings throughwhich the ends of the bolt loosely pass. One end of the plate isprovided with a finger 70* which fits loosely in an opening formed inthe front end of a strap 71: whose rear end is connected to one of thebolts 70 by means of which said plates 7c are fastened to the beam.

The top edges of the wing and landside are connected by a platform Mwhich rests thereupon and is bolted or otherwise attached thereto.

Owing to the provision of the wing and the three brace straps, it willbe apparent that the two members of the mold-board can be constructed oflighter metal than has heretofore been possible, since the mold board isbraced at all points and thus strengthened. The nose portion of theshare member of the mold-board is also braced by means of the bent strap0 Further description of the invention is considered unnecessary in viewof the foregoing.

lVhat is claimed is 1- The combination in a plow, of a beam; a landsidefastened thereto; a facing secured to the outer side face of thelandside; a rearwardly-extending wing secured to the landside and set atan angle thereto; a moldboard carried by the wing and comprising a bodyportion and an outwardly curved share, said share having its noseprojecting beyond the wing and formed with a rearwardly-extending flangesecured to the landside and forming a continuation of said facing; aseries of straps connecting said body portion and share together andarranged against the inner faces thereof, said straps having their lowerportions curved, to conform to the curvature of the share, the curvedportion of one strap being bent backwardly and secured to said wing, anda strap disposed against the nose of the share and the flange, andhaving its ends secured thereto for bracing the same.

In testimony whereof, I lfliX my signature, in presence of twowitnesses.

DANIEL DAHLSTROM.

l/Vitnesses EMIL DAHLSTROM, HENRY SANDS.

